* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  background: linear-gradient(135deg, #0a0a0a, #1f1f1f);
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: rgba(255, 255, 255, 0.05);
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.3);
  width: 340px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.tabs {
  position: relative;
}

.tab-label {
  display: inline-block;
  width: 50%;
  padding: 10px;
  cursor: pointer;
  font-weight: bold;
  color: #ccc;
  background: transparent;
  border-bottom: 2px solid transparent;
  transition: 0.3s;
}

input[type="radio"] {
  display: none;
}

#login-tab:checked + .tab-label {
  color: #00eaff;
  border-bottom: 2px solid #00eaff;
}

#signup-tab:checked + .tab-label {
  color: #00eaff;
  border-bottom: 2px solid #00eaff;
}

.content {
  position: relative;
  overflow: hidden;
  margin-top: 20px;
}

.content-inner {
  display: none;
}

#login-tab:checked ~ .content #login-content {
  display: block;
}

#signup-tab:checked ~ .content #signup-content {
  display: block;
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 10px;
}

input {
  padding: 10px;
  border-radius: 8px;
  border: none;
  outline: none;
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

input::placeholder {
  color: #aaa;
}

button {
  padding: 10px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  background: #00eaff;
  color: #000;
  font-weight: bold;
  transition: 0.3s;
}

button:hover {
  background: #00bcd4;
}
